Na2SO4-->X-->SO3-->BaSO4

Question

Na2SO4-->X-->SO3-->BaSO4

Answer 1

Na2SO4-->X-->SO3-->BaSO4

Na2SO4 + CaCl2 = CaSO4 + 2HCl

CaSO4 = CaO + SO3

SO3 + Ba(OH)2 = BaSO4 + H2O 

 

 X - CaSO4 - сульфат кальция